Automatic fire-alarm signal



Oct. 4, 1927. 1,644,124

F. H. GRUETTNER AUTOMATIC FIRE ALARM SIGNAL Filed Dec. 7, 1922 2 Sheets-Sheet l w -ql Oct. 4 1927.

F. H. GRUETTNER AUTOMATIC FIRE ALARM SIGNAL Filed Dec. 7, 1922 2 Sheets-Sheet 2 meticslh sound a. signal Patented Oct. 4, i927.

' uurrsu s'rsrs rescue FRANK HI. GE'UFETTNEE, $12" BUFFALO, NEW YORK;

AU'EGTMTWJ FIRE-ALARM SIGNhL.

Application filed December Z, 1922, Serial No. access.

character, which will automatically sound an alarm in case of a. fire starting in any room or compartment in the buildin A further object of my invention is to provide signal fire alarm which will autoin every room or compartment of the building and which will indicate *1 every room or compartment the room or compartment in Which the alarm hes sounded from,

And a still further object of my inven tion is to provide a. signal fire alarm which is adapted to close electric circuit upon the starting of a, fire in. any room or compertinent in the building which some is installed, which in turn causes e hell to ring in each room and at light to he 'lleshcd for indicating the room from which the alarm has been sounded.

Another object oi my invention is to orevide means wherelo e signal will he sounded. on the outside of t 1e building as well. as on the inside, so that in sees the Watchmen should "for any reason fail to hear and see the signal, attention will he directed to the building by the outside alarm.

Still another object on; my invention to provide signel fire slurm whsrehy means of communicoticu he had with fire headquarters for uutomsticelly sounding and giving an alarm in case of fire in any building equipped my improved fire signal,-

An additional object of the invention is to provide 9. fire alarm signal of the shore indicated cherecter, which is simple in com struction, eilicient for the purpose intended, and one which can he installed in huildiugs at it relatively low cost.

These and like objects of the invention will he better understood as the description follows sud. us is specifically pointed out in the appended claim.

Referring to the accompsuyiu drawings which form a pert of this s eo' cstiou,

Figure 1. is so. enlarged p no view 0' my improved fire elem, which is adapted. to

installed in each room or cou'ipartment of a building.

Figure 2 is an enlarged sectional View of a portion of the electric circuit closing system.

Figure 3 is a plan View of the movable contact member, and

Figure 4- is a plan. View of one floor of a building; equipped with my improved fire alarm and signal indicating means.

Referring to the accompanying drawings in detail, like characters will he used to designate like parts in the different views.

In the drawings, the numeral 1 indicates the rafters of a building, end. 25cc pertitions separating the different floors of the building into rooms or compartments. The numeral 3 designates means or" communicw tion between the different rooms or compartmeuts.

Secured to a central partition as at i and extending through the side partitions 5 and secured thereto as at 6 through a coil spring 7 are a series of Wires 8. Positioned in each of the Wires 8 at spaced intervals are aseries oi fuses 9, which are of such construction us to permit melting of the some in case the temperature in the room should reach. an exceedingly high proportion.

Seated Within. one of the rafters 1 are a. series of plugsli), of insulating material (see Figure 2} having a central possogcwa extending therethrough as st 11, through which one of the Wires 8 pass for engagement with the coil spring *3 as at 12 by means of at loop or ring. A contact plots 13 is positioned within it recess formed in. one end of each of the plugs 10 and has an electric terminal on. one side as at is, to which an electric conductor l5 is connected.

Mounted. on each oi the wires 8 and held stationery thereon by means of the set screw 16 is a. body member 17, of insulating materiel, having a. contact plate 18 on its face opposing the Contact plate 13. The Contact plate 18 is provided with a terminal 19 havingen electric conductor 20 connected thereto. The member 17 is held on the Wire 8 in spaced relation from the plug 10 and. contest plate 13.,

lo. constructing the plugs and body members, the Contact members 13 and 18 may be placed in molds oi configurations so that Oil when insulating material in. a. soft or plastic condition is poured or forced into molds around. the contact l8, Sitllil rection of the COHifiCiJ piste ihus oiosing a circuit through the conductor wires and to sound an sierra in the form of a hell 2]. in each re m or coiispsrzment of the buiieiinp; end else on outsitie the building In P idiiior sounding en o as indicated ght 22 being kg with the signs! alarm, e signal light is by the numereu the ex positioned on a board sio bell 21.

The numeral 2?;- wires 24 adopted to iifiicsies s battery having ii (therefrom and d with fiche Wires 15 the sooirce of current ei eierm. o H 21 12161 Eight 22 may 11 police iieeciquerers or fire headsmjrters for immediately indiceiing therein upon "the oeeurrei 'e of a any compartment or buiiciing equippeci si bii this improved; signs} eisrm.

in View of the foregoing eiesorip sion if my ii "on, token eoi accoii drawings i in-er expionatiori to l ee posisiozieo @011 epeesf iou objects of this invention is unnecessary.

While I have and described the pre ferred form of my invention I realize that "various minor changes may iae resorted to, Wizhout departing from the spirit and scope of the invention as claimed, and therefore, I do not Wish to iimit myself to the exact details of construction shown, nor to the combination and arrangement of parts.

What I claim as new and desire to secure by Letters Patent is:

A switch for fire alarm apparatus com-o prising e plug of insuieting material having e longitudinally disposed opening, the plug sing provided at one end with a diametricsliy enlarged heeci poreion having an annuis! groove, 21 contact plate located in the groove, a conductor siiciably received in the opening, e body member mounted upon the conductor and disposes; opposite the head of the plug and normeiiy spaced therefrom, a fusible eiemeiifiz connected with the conductor serving to hold the bociy member spaced from the piug, a spring connectefi with the conductor end being under tension with e tendency to move the boiy member towards the plug, the body member having so ennuier groove, oori'seei member seaied in saici groove suri having an ecige portion projecting beyond the oi the body member and toward the "pieie which is received in the head: of she plug.

in testimony whereof I have efiixed my NEE. 

